Unit 5 Flashcards
Why do some objects float when placed in water and other do not?
surface tension
name properties of an acid
tastes sour
turns blue litmus paper red
pH range is less than 7
property of bases
taste bitter
turns red litmus paper blue
feels slippery
pH range of higher than 7
what type of solution has a pH of 5
acid
a molecule with positive and negative charged regions which causes each end of the molecule to be attracted to the opposite end of different molecules?
polar molecule
bases have a higher concentration of what type of ion?
hydroxide
based on the model, what is the definition of an acid?
hydrogen is being donated
when determing a pH of a substance, a student used red litmus paper. if the substance had an acidic pH, what color did the red litmus paper turn?
red
What is neutral pH
7
what does pH stand for?
potential hydrogen
what is most alkaline on the chart?
drain cleaner
describe cohesion
to alike molecules, sticking together
adhesion
two different molecules stick together
water makes an upward curved meniscus in a graduate cylinder. What property of water accounts for the attraction of the water to the glass?
adhesion
it takes several weeks of warm temperatures to raise lake water several degrees. What is this concept known as?
heat capacity and specific heat
